Explosions generate extreme forces and pressures They cause massive displacement deformation and breakage of nearby objects The chief damage mechanism of high ex plosives is the blast wave which they generate A practical theory of explosives blast waves and blast loading of structures is presented This is used to develop a simpli ed visual model of explosions for use in computer graphics A heur...

a novel mathematical model has been developed to aid the formulation of emulsion explosives. this mathematical model calculated heat of explosion, oxygen balance and raw material cost as a function of explosive ingredients, and the solution of the mathematical model was obtained by a ms excel program. the effects of the different content of nh4no3, nano3, h2o, and span-80 and composite fuel oil...

The expense, danger, planning and precision required to create explosions suggests that the computational visual modelling of explosions is worthwhile. However, the short time scale at which explosions occur, and their sheer complexity, poses a difficult modelling challenge. After describing the basic phenomenology of explosion events, we present an efficient computational model of isotropic bl...

In the present paper a fully coupled three-dimensional thermo-hygro-mechanical model for concrete is discussed and used in the numerical studies. The model is formulated in the framework of continuum mechanics based on the principles of irreversible thermodynamics. Distribution of moisture, pore pressure, temperature, stresses and strains are calculated by employing a three-dimensional transien...

This paper presents the unique failure characteristics, such as fragmentation, internal cracks, general deformation and pitting, observed on a SS420C ball bearing from direct blast loading using cylindrical PE-4 explosive. Axisymmetric simulations were performed to gain insights of mechanisms. While additional work is needed fully understand all characteristic found, valuable findings have been...

Abstract This paper reports a numerical study carried out with the aim of quantifying nonlinear dynamic response drilled I-core steel sandwich panel when subjected to air blast loading. Several parameters, i.e., boundary conditions, explosive charge weight and asymmetrical loading, that can affect structural under loads, are considered. The material geometric nonlinearities strain-rate effects ...